We did cruise through Corsica during summer 2003, and was veeeeery hot! Carry a tent, no problems in finding good campsites, otherwise, hotel accomodation is expensive, as usual in EU. As beddhist said, focus yourself on west coast and do explore small mountain roads from the coast inland, especialy to Asja and area around Mt.Cinto. Roads are narrow and courvy but with realy good grip, so motorbiking should be a real pleasure if you keep yourself on the right side of the road! Be very careful on small roads, drivers are crazy, I had several tricky situations, luckily all went good for me.